COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
FA2100CVR
Rev. 15 Page 121
Apr. 14/16
Testing & Fault Isolation
23–70–04
Use or disclosure of information on this sheet is subject
to the restrictions on the cover page of this document.
08:07:15 Frequency Resp 1000 Hz 0.5 ref Results = HQ1 5.2 /HQ2 5.3 /HQ3
5.1 /HQC 5.1 /SQV1 5.4 /SQV2 5.4 /SQV3 5.4 /SQC 5.4 dBV
08:08:02 Frequency Resp 3500 Hz 0.5 ref Results = HQ1 3.3 /HQ2 2.9 /HQ3
2.5 /HQC 5.1 /SQV1 3.7 /SQV2 3.7 /SQV3 3.8 /SQC 3.5 dBV
08:08:12 Frequency Resp 5000 Hz 0.5 ref Results = HQC 4.9 dBV
08:08:23 Frequency Resp 6000 Hz 0.5 ref Results = HQC 4.9 dBV
08:08:23 PASSED Frequency Resp (All within 6 dB)
(9)
Signal to Noise and Distortion
Record simulated data at each of the following frequencies once at 0 reference level
and again at 1/10 reference).
Frequencies for HQ1, HQ2, HQ3, HQCAM, SQV1, and SQCAM are:
206, 282, 386, 529, 724, 993, 1360, 1864, 2554 and 3500 Hz.
Frequencies for HQCAM and SQCAM are:
217, 314, 454, 656, 949, 1372, 1984 and 2869 Hz.
Frequencies for HQCAM only are:
4148 and 6000 Hz.
Verify HQ > 24.0 dB and SQ > 20.0 dB.
Example report message(s):
08:09:38 PASSED SN+D 150 Hz 1.0 ref (Expected HQ > 24.0 dB SQ > 20.0
dB) Results = HQ1 35.0 /HQ2 34.6 /HQ3 35.3 /HQC 36.9 /SQV1 32.1 /SQV2
31.6 /SQV3 32.0 /SQC 31.6 dB
08:35:07 PASSED SN+D 150 Hz 1.0 ref (Expected HQC > 24.0 dB SQC > 20.0
dB) Results = HQC 30.7 /SQC 25.9 dB
(10) Crosstalk Audio
Record simulated 1000 Hz data for each channel 1,2,3 and 4 and calculate differ-
ence between driven and non
−
driven channels. Verify difference is less than
−
40
dB.
Example report message(s):
08:41:34 PASSED Crosstalk (Audio) 1000 Hz 1.0 ref (Expected Driven
−
Non
−
Driven <
−
40 dB) Results = HQ1 11.2 /HQ2
−
101.0 /HQ3
−
109.9 /HQC
−
128.1
/SQV 11.4 /SQC
−
84.4 dBV
08:41:49 PASSED Crosstalk (Audio) 1000 Hz 1.0 ref (Expected Driven
−
Non
−
Driven <
−
40 dB) Results = HQ1
−
101.3 /HQ2 11.2 /HQ3
−
115.3 /HQC
−
107.5
/SQV 11.4 /SQC
−
72.3 dBV
The document reference is online, please check the correspondence between the online documentation and the printed version.